Correct answer is by. The equiv 48 - (-12) =

60

Explanation:

48-(-12)=60

the -(- is like a big plus sign really if you see that then just add the numbers together so do 48 plus 12 it equals 60.

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

double the distance = divide strength by 4